Top Definition
An acronym used in text messaging that means: I Might Be Freakin' Gay
In a text message: hes so hot OMG IMBFG
by Gordon Bennett October 08, 2005
1 more definition
10 Words related to imbfg
Acronym for: I Make Boys Fart Gloriously
imbfg = I Make Boys Fart Gloriously
by Gordon Bennett October 10, 2005

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